./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-30.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-30.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5536eec27f0e30a34c1a96e838ac5cf11c75a521ed3ec15ff2fb1a338cbfa9d3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:32:24,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:32:24,389 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:32:24,395 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:32:24,396 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:32:24,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:32:24,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:32:24,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:32:24,429 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:32:24,429 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:32:24,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:32:24,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:32:24,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:32:24,431 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:32:24,432 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:32:24,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:32:24,432 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:32:24,433 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:32:24,433 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:32:24,434 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:32:24,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:32:24,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:32:24,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:32:24,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:32:24,439 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:32:24,439 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:32:24,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:32:24,442 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:32:24,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:32:24,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:32:24,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:32:24,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:32:24,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:32:24,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:32:24,444 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:32:24,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:32:24,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:32:24,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:32:24,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:32:24,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:32:24,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:32:24,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:32:24,448 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5536eec27f0e30a34c1a96e838ac5cf11c75a521ed3ec15ff2fb1a338cbfa9d3 [2024-11-18 22:32:24,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:32:24,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:32:24,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:32:24,748 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:32:24,749 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:32:24,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-30.i [2024-11-18 22:32:26,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:32:26,454 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:32:26,455 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-30.i [2024-11-18 22:32:26,467 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5408931b6/6c6279c2329e45a98b8bff5b3fc1174f/FLAG4a5dc8c03 [2024-11-18 22:32:26,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5408931b6/6c6279c2329e45a98b8bff5b3fc1174f [2024-11-18 22:32:26,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:32:26,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:32:26,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:32:26,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:32:26,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:32:26,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:32:26" (1/1) ... [2024-11-18 22:32:26,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d387e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:26, skipping insertion in model container [2024-11-18 22:32:26,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:32:26" (1/1) ... [2024-11-18 22:32:26,884 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:32:27,085 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-30.i[916,929] [2024-11-18 22:32:27,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:32:27,216 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:32:27,232 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-30.i[916,929] [2024-11-18 22:32:27,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:32:27,316 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:32:27,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27 WrapperNode [2024-11-18 22:32:27,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:32:27,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:32:27,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:32:27,319 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:32:27,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27" (1/1) ... [2024-11-18 22:32:27,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27" (1/1) ... [2024-11-18 22:32:27,396 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 247 [2024-11-18 22:32:27,396 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:32:27,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:32:27,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:32:27,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:32:27,413 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27" (1/1) ... [2024-11-18 22:32:27,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27" (1/1) ... [2024-11-18 22:32:27,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27" (1/1) ... [2024-11-18 22:32:27,494 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 22:32:27,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27" (1/1) ... [2024-11-18 22:32:27,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27" (1/1) ... [2024-11-18 22:32:27,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27" (1/1) ... [2024-11-18 22:32:27,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27" (1/1) ... [2024-11-18 22:32:27,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27" (1/1) ... [2024-11-18 22:32:27,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27" (1/1) ... [2024-11-18 22:32:27,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:32:27,559 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:32:27,559 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:32:27,559 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:32:27,560 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27" (1/1) ... [2024-11-18 22:32:27,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:32:27,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:32:27,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 22:32:27,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 22:32:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:32:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:32:27,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:32:27,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:32:27,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:32:27,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:32:27,794 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:32:27,801 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:32:28,413 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-18 22:32:28,414 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:32:28,432 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:32:28,434 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:32:28,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:32:28 BoogieIcfgContainer [2024-11-18 22:32:28,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:32:28,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:32:28,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:32:28,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:32:28,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:32:26" (1/3) ... [2024-11-18 22:32:28,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47cad7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:32:28, skipping insertion in model container [2024-11-18 22:32:28,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:32:27" (2/3) ... [2024-11-18 22:32:28,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47cad7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:32:28, skipping insertion in model container [2024-11-18 22:32:28,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:32:28" (3/3) ... [2024-11-18 22:32:28,448 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-30.i [2024-11-18 22:32:28,467 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:32:28,467 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:32:28,549 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:32:28,556 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@51974cc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:32:28,557 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:32:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 75 states have (on average 1.4666666666666666) internal successors, (110), 76 states have internal predecessors, (110), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 22:32:28,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-18 22:32:28,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:28,576 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:32:28,576 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:28,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash 435639877, now seen corresponding path program 1 times [2024-11-18 22:32:28,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:28,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644716330] [2024-11-18 22:32:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:28,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-18 22:32:29,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:29,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644716330] [2024-11-18 22:32:29,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644716330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:32:29,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368881498] [2024-11-18 22:32:29,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:29,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:32:29,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:32:29,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:32:29,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 22:32:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:29,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 22:32:29,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:32:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-18 22:32:29,326 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:32:29,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368881498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:29,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:32:29,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 22:32:29,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192689712] [2024-11-18 22:32:29,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:29,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 22:32:29,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:29,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 22:32:29,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:32:29,373 INFO L87 Difference]: Start difference. First operand has 102 states, 75 states have (on average 1.4666666666666666) internal successors, (110), 76 states have internal predecessors, (110), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 22:32:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:29,438 INFO L93 Difference]: Finished difference Result 192 states and 326 transitions. [2024-11-18 22:32:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 22:32:29,441 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) Word has length 165 [2024-11-18 22:32:29,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:29,469 INFO L225 Difference]: With dead ends: 192 [2024-11-18 22:32:29,469 INFO L226 Difference]: Without dead ends: 93 [2024-11-18 22:32:29,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:32:29,477 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:29,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:32:29,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-18 22:32:29,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-18 22:32:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 67 states have internal predecessors, (93), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 22:32:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 141 transitions. [2024-11-18 22:32:29,534 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 141 transitions. Word has length 165 [2024-11-18 22:32:29,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:29,536 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 141 transitions. [2024-11-18 22:32:29,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 22:32:29,537 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 141 transitions. [2024-11-18 22:32:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-18 22:32:29,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:29,540 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:32:29,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 22:32:29,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 22:32:29,742 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:29,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:29,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1395853833, now seen corresponding path program 1 times [2024-11-18 22:32:29,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:29,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886837379] [2024-11-18 22:32:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:29,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 22:32:30,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:30,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886837379] [2024-11-18 22:32:30,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886837379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:32:30,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:32:30,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:32:30,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346096587] [2024-11-18 22:32:30,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:32:30,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:32:30,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:30,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:32:30,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:32:30,536 INFO L87 Difference]: Start difference. First operand 93 states and 141 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 22:32:30,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:30,832 INFO L93 Difference]: Finished difference Result 333 states and 501 transitions. [2024-11-18 22:32:30,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:32:30,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 165 [2024-11-18 22:32:30,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:30,839 INFO L225 Difference]: With dead ends: 333 [2024-11-18 22:32:30,840 INFO L226 Difference]: Without dead ends: 243 [2024-11-18 22:32:30,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:32:30,844 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 199 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:30,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 471 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:32:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-18 22:32:30,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 175. [2024-11-18 22:32:30,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 124 states have (on average 1.3548387096774193) internal successors, (168), 124 states have internal predecessors, (168), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 22:32:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 264 transitions. [2024-11-18 22:32:30,896 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 264 transitions. Word has length 165 [2024-11-18 22:32:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:30,897 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 264 transitions. [2024-11-18 22:32:30,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 22:32:30,898 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 264 transitions. [2024-11-18 22:32:30,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-18 22:32:30,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:30,902 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:32:30,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:32:30,902 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:30,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:30,903 INFO L85 PathProgramCache]: Analyzing trace with hash -341933495, now seen corresponding path program 1 times [2024-11-18 22:32:30,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:30,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473681666] [2024-11-18 22:32:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:30,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-11-18 22:32:32,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:32,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473681666] [2024-11-18 22:32:32,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473681666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:32:32,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670552184] [2024-11-18 22:32:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:32,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:32:32,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:32:32,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:32:32,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 22:32:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:32,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 22:32:32,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:32:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 534 proven. 33 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2024-11-18 22:32:32,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:32:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 99 proven. 36 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-11-18 22:32:33,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670552184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:32:33,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:32:33,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2024-11-18 22:32:33,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300770853] [2024-11-18 22:32:33,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:32:33,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 22:32:33,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:33,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 22:32:33,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-18 22:32:33,379 INFO L87 Difference]: Start difference. First operand 175 states and 264 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 3 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-18 22:32:33,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:32:33,825 INFO L93 Difference]: Finished difference Result 279 states and 411 transitions. [2024-11-18 22:32:33,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 22:32:33,826 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 3 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 166 [2024-11-18 22:32:33,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:32:33,828 INFO L225 Difference]: With dead ends: 279 [2024-11-18 22:32:33,828 INFO L226 Difference]: Without dead ends: 107 [2024-11-18 22:32:33,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=249, Invalid=563, Unknown=0, NotChecked=0, Total=812 [2024-11-18 22:32:33,831 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 124 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:32:33,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 334 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:32:33,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-18 22:32:33,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2024-11-18 22:32:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 73 states have internal predecessors, (94), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 22:32:33,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 142 transitions. [2024-11-18 22:32:33,858 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 142 transitions. Word has length 166 [2024-11-18 22:32:33,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:32:33,859 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 142 transitions. [2024-11-18 22:32:33,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 3 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-18 22:32:33,861 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 142 transitions. [2024-11-18 22:32:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 22:32:33,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:32:33,867 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:32:33,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 22:32:34,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-18 22:32:34,069 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:32:34,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:32:34,070 INFO L85 PathProgramCache]: Analyzing trace with hash -244228299, now seen corresponding path program 1 times [2024-11-18 22:32:34,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:32:34,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31313021] [2024-11-18 22:32:34,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:34,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:32:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 93 proven. 39 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2024-11-18 22:32:42,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:32:42,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31313021] [2024-11-18 22:32:42,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31313021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:32:42,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118181012] [2024-11-18 22:32:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:32:42,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:32:42,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:32:42,789 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:32:42,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 22:32:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:32:42,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-18 22:32:42,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:32:46,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 692 proven. 90 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2024-11-18 22:32:46,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:32:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 183 proven. 75 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2024-11-18 22:32:56,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118181012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:32:56,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:32:56,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25, 21] total 58 [2024-11-18 22:32:56,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573680477] [2024-11-18 22:32:56,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:32:56,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-18 22:32:56,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:32:56,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-18 22:32:56,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=2746, Unknown=0, NotChecked=0, Total=3306 [2024-11-18 22:32:56,861 INFO L87 Difference]: Start difference. First operand 101 states and 142 transitions. Second operand has 58 states, 56 states have (on average 2.892857142857143) internal successors, (162), 54 states have internal predecessors, (162), 13 states have call successors, (72), 6 states have call predecessors, (72), 13 states have return successors, (72), 15 states have call predecessors, (72), 13 states have call successors, (72)